LMB的制备及联合陶瓷膜用于二沉池出水深度除磷  

Preparation of LMB and Combined Ceramic Membrane for Advanced Dephosphorization of Effluent from Secondary Municipal Wastewater

作　　者：聂锦旭[1] 涂甜富 黄华冠 王志红[1] 杜星 NIE Jinxu;TU Tianfu;HUANG Huaguan;WANG Zhihong;DU Xing(School of Civil and Transportation Engineering,Guangdong University of Technology,Guangzhou 510006,China)

机构地区：[1]广东工业大学土木与交通工程学院,广东广州510000

出　　处：《水处理技术》2023年第3期72-76,82,共6页Technology of Water Treatment

基　　金：国家自然科学基金面上项目(52170070);广东省自然科学基金项目(2021A1515012275)。

摘　　要：使用高效微波加热法制备功能性材料镧改性膨润土(Lanthanum-modified bentonite, LMB)吸附磷,利用扫描电镜SEM、X射线衍射仪、比表面积孔径分析仪对改性前后膨润土的微观形貌和组份进行分析,表明改性后层间距增大0.28 nm,对磷的吸附效能提升;将LMB应用于吸附-超滤工艺用于污水厂二沉池出水深度除磷。结果表明,La成功负载在膨润土上,采用吸附-超滤工艺不仅能发挥LMB高效除磷的作用,且能有效缓解膜污染。The lanthanum-modified bentonite(LMB) was prepared by the high-efficiency microwave heating method, and the micro morphology and composition of the bentonite before and after the modification were analyzed by scanning electron microscopy, X-ray diffractometer, and specific surface area aperture analyzer. The results indicated that the layer spacing was increased 0.28 nm after modification, and the adsorption efficiency of phosphorus was improved. The LMB was applied to the adsorption-ultrafiltration process for the deep removal of phosphorus from the secondary effluent of the sewage plant. The results showed that the LMB adsorption-ultrafiltration process can not only play the role for efficient phosphorus removal, but also effectively alleviate membrane pollution.

关 键 词：镧改性膨润土 吸附 超滤 磷 膜污染 

分 类 号：TQ028.8[化学工程]